One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(9,10,14,11)(12,15,13,16)(17,18,21,26,20,25,29,23)(19,24,28,32,27,22,30,31)(1,3)(2,6)(4,7)(5,8)(10,11)(12,13)(17,19)(18,22)(20,27)(21,28)(23,32)(24,25)(26,31)(29,30) involution — undirected(9,11,14,10)(12,15,13,16)(18,23)(19,27)(21,29)(22,31)(24,32)(25,26)(3,8)(6,7)(9,12,14,13)(10,15,11,16)(17,19)(18,24)(20,27)(21,28)(22,25)(23,31)(26,32)(29,30)(1,4,5,2)(3,7,8,6)(9,13,14,12)(10,15,11,16)(18,25)(19,27)(23,26)(28,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.